JP2942746B2 - Concrete block - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete block for constructing various three-dimensional structures in the fields of civil engineering and construction.

[0002]

2. Description of the Related Art Conventionally, in the fields of civil engineering and construction,
Concrete blocks having various shapes and structures have been developed according to the purpose of use. For example, a slope block to be constructed along a slope, a retaining wall block in which a reinforcing bar insertion hole is formed, a gutter block having a U-shaped or rectangular cross section so that a water channel can be formed, Alternatively, there is a boundary block that separates a sidewalk from a roadway.

[0003] Since these blocks are formed to have shapes, sizes and weights corresponding to the respective applications, they are appropriately used according to the purpose of use or the situation at the construction site.

[0004]

The conventional concrete block is difficult to convert because it has a shape, a structure and a weight corresponding to each use. For example, it is firstly impossible to use a gutter block as a retaining wall block. Accordingly, the purpose of use of each concrete block is restricted, and one type of concrete block cannot be widely used for various purposes.

[0005] In addition, since the conventional concrete block is heavy for its size, it is difficult to carry and install the concrete block. In addition, when a large number of blocks are stacked, the weight load on the ground is reduced. As the size becomes large, there is a risk of land subsidence and the like, which is also a major factor limiting the purpose of use.

Further, in the case of a concrete block formed in a special shape according to the purpose of use, a complicated formwork, a core, and the like are required in a manufacturing process, and it is difficult to manufacture.

Accordingly, an object of the present invention is to provide a concrete block which can be used in a wide range of fields without limiting the purpose of use, is relatively lightweight, and is easy to manufacture. is there.

[0008]

According to the present invention, a hollow portion communicating with all of the outer surfaces is formed in a concrete block made of a cube using a plurality of split cores which can be removed after hardening of the concrete. In the concrete block body, the hollow portion is formed by arranging columnar divided cores having the same outer diameter so that their axial directions are orthogonal and coincide with each other.

With such a configuration, when a plurality of concrete block bodies are stacked and arranged, an ordered structure can be obtained.
Can be used in a wide range of fields. In addition, since the cubic body has a hollow portion communicating with all outer surfaces and can secure an inlet and an outlet for liquid or gas, the cubic body has water permeability, air permeability, etc., has a high porosity, and is relatively lightweight. Further, since the hollow portion of the concrete block body is formed by using a plurality of split cores that can be disassembled and removed after hardening of the concrete, a complicated mold or the like is not required, and the manufacture is easy.

The hollow portion is formed by arranging cylindrical divided cores having the same outer diameter so that their axial directions are orthogonal and coincide with each other, so that the divided cores after hardening of the concrete can be easily taken out. Becomes Since the hollow portion thus formed has a cylindrical body-shaped space orthogonal to each other, when stacking and arranging a plurality of concrete block bodies, each hollow portion is communicated with each other to provide air permeability, Water permeability and the like can be secured, and the purpose of use can be expanded.

[0011] Further, since the space of the cylindrical shape is orthogonal to each other, the edge of the concrete block does not have an acute angle portion, so that the edge of the concrete block may be damaged when it comes into contact with another object. In addition, when a load is applied, there is no part where the stress distribution changes suddenly and stress concentration is hard to occur, so it has high strength and does not cause fatigue failure, etc.
Has excellent durability.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing a concrete block body according to an embodiment of the present invention, FIG. 2 is a perspective view showing a divided core for manufacturing the concrete block body shown in FIG. 1 in an assembled state, and FIG. It is a top view which shows the state which decomposed the core.

The concrete block 10 of the present embodiment.
Has a cubic outer shape, and has a hollow portion 11 communicating with each of the six faces constituting the cubic. In addition, the hollow portion 11
Is formed by a split core 12 that is disassembled and removable after hardening concrete, as described later.

By adopting such a configuration, when a plurality of concrete block bodies 10 are stacked and arranged, an orderly structure can be constructed and the stability is good, so that the purpose of use is expanded. And can be used in a wide range of fields. In addition, the hollow portion 11
Since is connected to all six faces of the cube, it has a high porosity and is relatively lightweight.

Further, the hollow portion 11 of the concrete block body 10 is disassembled and removable after hardening the concrete, and the main core 12a and the sub cores 12b, 12c, 12
Since it is formed using the split core 12 composed of d and 12e, a complicated mold or the like is not required, and the manufacture is easy.

Further, in the concrete block body 10, the hollow portion 11 is formed of a divided core in which the axial directions of the main core 12a and the sub-cores 12b, 12c, 12d, and 12e of the columnar shape are orthogonal and coincide with each other. As described later, the core 12 is easily taken out after the concrete is hardened.

In this case, since the hollow portion 11 has a cylindrical body shape in which the spaces are orthogonal to each other, a plurality of concrete block bodies 10 are stacked and arranged in a horizontal direction or a vertical direction to construct various structures. In this case, the respective hollow portions 11 can be easily communicated with each other, whereby air permeability and water permeability of various structures can be ensured, so that the purpose of use can be expanded.

Further, in the concrete block body 10 of the present embodiment, the hollow portion 11 is in contact with another object because the cylindrical space has a shape in which the spaces of the cylindrical shape are orthogonal to each other, and there is no acute angle portion at the periphery. In this case, it is difficult for the peripheral edge to be broken, and when a load is applied, there is no part where the stress distribution changes suddenly and it is difficult for stress concentration to occur. Are better.

Here, a method of manufacturing the concrete block body 10 will be described with reference to FIG. FIG. 4 is an explanatory view showing a manufacturing process of the concrete block body 10.

As shown in FIG. 4A, a divided core 12 assembled in a predetermined shape is placed in a substantially cubic form 13.
Is placed and the upper frame 13a is mounted, and then concrete is filled between the mold 13 and the split core 12 from the opening of the upper frame 13a. After the predetermined time has passed and the concrete has hardened, the upper frame 13a and the mold 13 are removed, and FIG.
As shown in (b), first, after the auxiliary cores 12b, 12c, 12d, and 12e constituting the split core 12 are respectively extracted in the axial direction, the main core 12a is extracted in the axial direction. Through these steps, the concrete block body 10 having the hollow portion 11 can be obtained.

In this case, the cylindrical split core 12 is composed of a main core 12a and sub-cores 12b, 12c, 12d, 12e.
Are arranged and formed so that their axial directions are orthogonal and coincide with each other, so that the split core 12 can be easily taken out after the concrete is hardened. As described above, by using the split core 12, the concrete block body 10 having the hollow portion 11 can be formed without using a complicated mold or the like, so that the manufacture is easy.

Next, the use state of the concrete block body 10 will be described with reference to FIG. FIG. 5 is a partially cutaway sectional view showing an example of a use state of the concrete block body 10.

In the use state shown in FIG. 5, a large number of concrete block bodies 1 are placed in a space formed by excavating the ground 14 and arranging the foundation slab 15 and the side walls 16.
0 are vertically and horizontally arranged in a horizontal direction via a spacer 20 and stacked vertically, and a water collecting portion 17 having water permeability is provided on the structure 21 of the concrete block body 10.
Is provided. Further, a space 19 in which the concrete block body 10 is not provided is formed in a part of the structure 21 of the concrete block body 10, and a manhole 18 is provided above the space 19.
Is installed.

By forming such a structure 21 in the ground 14, rainwater or the like that has fallen on the ground surface is collected by the water collecting portion 17.
And collects in the structure 21, so that drainage of the ground surface is improved. Further, rainwater or the like collected in the structure 21 can be pumped from the manhole 18 into the space 19 by inserting a suction pipe or the like, and can be used for various purposes.

In this case, each concrete block 10
Since has a cubic shape, it has self-sustainability itself, is easy to construct, can be arranged and laminated in an orderly manner, and has good stability. In addition, since the concrete block body 10 has the hollow portion 11 communicating with all six surfaces, it can store a large amount of water, and is relatively lightweight, so that the workability is good and there is a possibility that land subsidence may occur. Nor. In addition, since the concrete block body 10 has a cubic shape, the same state can be obtained even if the surface is arranged and laminated with any surface facing upward, and the arrangement is adapted to the installation space at the construction site.
Lamination can be performed. Therefore, the concrete block body 10 can be used not only for the structure 21 shown in FIG.

[0026]

According to the present invention, the following effects can be obtained.

(1) When a hollow portion is formed inside a concrete block by using a split core, cylindrical split cores having the same outer diameter are arranged so that their axial directions are orthogonal and coincide with each other. By forming the part, the hollow part becomes a shape in which the space of the cylindrical body shape is orthogonal to each other, so when stacking and arranging a plurality of concrete block bodies, each hollow part is communicated with each other, air permeability, water permeability Can be secured, and the purpose of use can be expanded. Furthermore, since there is no sharp edge, it is possible to prevent chipping and the like, and it is difficult for stress concentration to occur. Therefore, compressive strength is increased, fatigue fracture is reduced, and durability is improved.

(2) When a plurality of concrete blocks are stacked and arranged by using a concrete block as a cube, an orderly state can be obtained and the stability is good. Since the body and various structures can be formed, the purpose of use can be further expanded.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a concrete block body according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a split core for manufacturing the concrete block body shown in FIG. 1 in an assembled state.

FIG. 3 is a plan view showing the split core shown in FIG. 2 in an exploded state.

FIG. 4 is an explanatory perspective view showing a manufacturing process of the concrete block body shown in FIG. 1;

FIG. 5 is a partially cutaway sectional view showing a use state of the concrete block body shown in FIG.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Concrete block body 11 Hollow part 12 Split core 12a Main core 12b-12e Secondary core 13 Form 13a Upper frame 14 Ground 15 Foundation floor 16 Side wall 17 Water collecting part 18 Manhole 19 Space 20 Spacer 21 Structure

────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-9-242044 (JP, A) JP-A-8-155933 (JP, A) JP-A-56-144114 (JP, A) JP-A-63-1984 28606 (JP, A) JP-A-49-80122 (JP, A) JP-A-55-86458 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) B28B 7/26 E04B 2 / 02

Claims (1)

(57) [Claims] 1. A concrete block body, wherein a hollow portion communicating with all the outer surfaces of said outer surfaces is formed by using a plurality of split cores removable after hardening of concrete, inside a concrete block made of a cube. The concrete block is characterized in that the hollow portion is formed by arranging cylindrical divided cores having the same outer diameter so that their axial directions are orthogonal and coincide with each other.